did you have issues with banking apps, authenticator apps or outlook on workprofile?
I ask, because when I was using cyanogenmod a hundred years ago, banking apps were a major pain. And now I am using outlook on a flagship with stockrom, and outlook on workprofile is still a major pain, and I can easily imagine, it working even worse on grapheneos.
I don't have outlook, but Teams works normally, as far as I can tell
> authenticator apps
No issues there with the Microsoft Authenticator and Yubico Authenticator.
> banking apps
My banking apps work, but that's not the case for all of them. I would personally change bank rather than leaving GrapheneOS. The annoying part could be work apps (I wouldn't want to have a second phone just for work), but my bank I can change :-).
I have been trying Linux on mobile. This is a hobby.
I have been using GrapheneOS... honestly it's just like a normal Android after two steps:
1. Install GrapheneOS (their installer is incredibly good, it just works).
2. From the GrapheneOS store, install the Play Store (it's like 3 taps).
After that it's a normal Android, except it's more secure and you get updates (meaning that you are on the latest version of Android, always).